/* ============================================================
   CYBER SENTINEL — Dark SecOps Theme
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;600;700&family=Inter:wght@300;400;500;600;700&display=swap');

/* --- Reset & Base ----------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:          #080d16;
  --bg-card:     #0d1421;
  --bg-card2:    #111926;
  --border:      #1e2d44;
  --border-glow: #00ff8844;
  --green:       #00ff88;
  --cyan:        #00c8ff;
  --red:         #ff4455;
  --amber:       #ffaa00;
  --text:        #c8d8e8;
  --text-muted:  #5a7a9a;
  --text-dim:    #3a5470;
  --white:       #e8f4ff;
  --font-mono:   'JetBrains Mono', 'Courier New', monospace;
  --font-body:   'Inter', sans-serif;
  --radius:      6px;
  --radius-lg:   12px;
  --transition:  0.2s ease;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

::selection { background: #00ff8822; color: var(--green); }

/* --- Scrollbar -------------------------------------------- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* --- Grid overlay ----------------------------------------- */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,200,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,200,255,0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
}

/* --- Nav -------------------------------------------------- */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  height: 60px;
  background: rgba(8, 13, 22, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--white);
  text-decoration: none;
  letter-spacing: 0.05em;
}

.nav-logo span { color: var(--green); }

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  text-decoration: none;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color var(--transition);
}

.nav-links a:hover,
.nav-links a.active { color: var(--green); }

.nav-cta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--green);
  text-decoration: none;
  border: 1px solid var(--green);
  padding: 0.4rem 1rem;
  border-radius: var(--radius);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: background var(--transition), color var(--transition);
}

.nav-cta:hover {
  background: var(--green);
  color: var(--bg);
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-muted);
  border-radius: 2px;
  transition: var(--transition);
}

/* --- Sections --------------------------------------------- */
section {
  position: relative;
  z-index: 1;
  padding: 6rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--green);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.section-title {
  font-family: var(--font-body);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.2;
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 580px;
  line-height: 1.7;
}

/* --- Hero ------------------------------------------------- */
#hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: 80px;
  max-width: 1100px;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--green);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.hero-eyebrow::before {
  content: '';
  display: inline-block;
  width: 28px;
  height: 1px;
  background: var(--green);
}

.hero-title {
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.hero-title .accent { color: var(--green); }
.hero-title .accent-cyan { color: var(--cyan); }

.hero-desc {
  font-size: 1.1rem;
  color: var(--text);
  max-width: 600px;
  line-height: 1.75;
  margin-bottom: 2.5rem;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 2.5rem;
}

.badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  border-radius: 4px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.badge-green  { background: #00ff8815; color: var(--green);  border: 1px solid #00ff8830; }
.badge-cyan   { background: #00c8ff15; color: var(--cyan);   border: 1px solid #00c8ff30; }
.badge-red    { background: #ff445515; color: var(--red);    border: 1px solid #ff445530; }
.badge-amber  { background: #ffaa0015; color: var(--amber);  border: 1px solid #ffaa0030; }

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

.btn-primary {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.8rem 1.8rem;
  background: var(--green);
  color: var(--bg);
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: opacity var(--transition), transform var(--transition);
}

.btn-primary:hover { opacity: 0.88; transform: translateY(-1px); }

.btn-secondary {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.8rem 1.8rem;
  background: transparent;
  color: var(--cyan);
  border: 1px solid var(--cyan);
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}

.btn-secondary:hover { background: #00c8ff15; }

/* --- Tier cards ------------------------------------------- */
.tiers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 4rem;
}

.tier-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: border-color var(--transition), transform var(--transition);
}

.tier-card:hover {
  border-color: var(--green);
  transform: translateY(-3px);
}

.tier-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-dim);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.tier-title {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.4rem;
}

.tier-latency {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--green);
  margin-bottom: 0.75rem;
}

.tier-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* --- Divider ---------------------------------------------- */
.section-divider {
  max-width: 1100px;
  margin: 0 auto;
  border: none;
  border-top: 1px solid var(--border);
}

/* --- Stats strip ------------------------------------------ */
.stats-strip {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 2.5rem 2rem;
  position: relative;
  z-index: 1;
}

.stats-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  text-align: center;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--green);
  line-height: 1;
  margin-bottom: 0.4rem;
}

.stat-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

/* --- About ------------------------------------------------ */
#about .about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-top: 2.5rem;
  align-items: start;
}

.about-text p {
  color: var(--text);
  line-height: 1.8;
  margin-bottom: 1rem;
}

.about-text p:last-child { margin-bottom: 0; }

.skills-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

.skill-item {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  padding: 0.5rem 0.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.skill-item::before {
  content: '▸';
  color: var(--green);
  font-size: 0.65rem;
}

/* --- Projects --------------------------------------------- */
#projects .projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(0,255,136,0.06);
}

.project-card.featured {
  grid-column: span 2;
  border-color: #00ff8822;
  background: linear-gradient(135deg, #0d1421 0%, #0a1a14 100%);
}

.project-card.featured:hover {
  border-color: #00ff8866;
  box-shadow: 0 8px 40px rgba(0,255,136,0.1);
}

.project-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 0.75rem;
  gap: 1rem;
}

.project-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.project-icon.green  { background: #00ff8818; border: 1px solid #00ff8830; }
.project-icon.cyan   { background: #00c8ff18; border: 1px solid #00c8ff30; }
.project-icon.amber  { background: #ffaa0018; border: 1px solid #ffaa0030; }
.project-icon.red    { background: #ff445518; border: 1px solid #ff445530; }
.project-icon.purple { background: #a855f718; border: 1px solid #a855f730; }

.project-status {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
}

.status-live    { background: #00ff8815; color: var(--green);  border: 1px solid #00ff8830; }
.status-active  { background: #00c8ff15; color: var(--cyan);   border: 1px solid #00c8ff30; }
.status-dev     { background: #ffaa0015; color: var(--amber);  border: 1px solid #ffaa0030; }
.status-pilot   { background: #a855f715; color: #a855f7;       border: 1px solid #a855f730; }

.project-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.5rem;
}

.project-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.65;
  flex: 1;
  margin-bottom: 1rem;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: auto;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-dim);
  background: var(--bg-card2);
  border: 1px solid var(--border);
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
}

/* --- Contact ---------------------------------------------- */
#contact {
  text-align: center;
}

#contact .section-subtitle {
  margin: 0 auto 2.5rem;
}

.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 3rem 2rem;
  max-width: 520px;
  margin: 0 auto;
}

.contact-email {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 600;
  color: var(--green);
  text-decoration: none;
  display: block;
  margin-bottom: 2rem;
  transition: opacity var(--transition);
}

.contact-email:hover { opacity: 0.75; }

.contact-links {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.contact-link {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
  text-decoration: none;
  border: 1px solid var(--border);
  padding: 0.5rem 1.2rem;
  border-radius: var(--radius);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color var(--transition), border-color var(--transition);
}

.contact-link:hover { color: var(--cyan); border-color: var(--cyan); }

/* --- Footer ----------------------------------------------- */
footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border);
  padding: 2rem;
  text-align: center;
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

footer p {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
}

footer p span { color: var(--green); }

/* --- Fade-in animation ------------------------------------ */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Responsive ------------------------------------------- */
@media (max-width: 768px) {
  .nav-links, .nav-cta { display: none; }
  .nav-hamburger { display: flex; }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 60px; left: 0; right: 0;
    background: rgba(8,13,22,0.98);
    padding: 1.5rem 2rem 2rem;
    border-bottom: 1px solid var(--border);
    gap: 1.25rem;
  }

  .nav-links.open + .nav-cta {
    display: block;
  }

  .tiers { grid-template-columns: 1fr; }
  .stats-inner { grid-template-columns: repeat(2, 1fr); }
  #about .about-grid { grid-template-columns: 1fr; }
  #projects .projects-grid { grid-template-columns: 1fr; }
  .project-card.featured { grid-column: span 1; }
  .hero-title { font-size: 2.2rem; }
}

@media (max-width: 480px) {
  .stats-inner { grid-template-columns: 1fr 1fr; }
  section { padding: 4rem 1.25rem; }
}